Sort by
Relevancy

Free Stories

50%
lust of a sex-agenarian nana-pops
Frenzied lust of a sex-agenarian nana-pops; between dream and reality I had never fantasized of a manly man, even after offering my virginity; to a fabulous sissy. Before my new Era, my fantasy preferences were always with glabrous he-she’s, same about my relationships after… BUT BUT BUT… My last t... Read full Story
hippocampus_171 2023-07-09 5,025 anal Small Tits Amateur Group Sex Masturbation Guy Fucks Shemale Sex Toys Mature small cock big ass sissy femboy
50%
MON SECRET RÉVÉLÉ ⚧️ ⚧️
C'etait ma propre faute. Comment ai-je pu être si stupide ? Je m'appelle Karl. J'ai démarré une entreprise Internet il y a douze ans. J'avais travaillé comme représentant d'un fabricant pour une maison de courtage spécialisée dans les marchandises importées. Je pensais que mon entreprise ne faisa... Read full Story
Femboy 2021 2023-03-30 1,173 Group Sex Creampie Big Cock Lingerie Guy Fucks Shemale cum in mouth feminisation forcé cage de chateté domination fémi
88%
Alex and Jon
Alex was not beautiful, but had a sexy attractiveness that most could not help but take a second look. This was the case with Jon as he searched adult Friend-Finder ads for someone that would satisfy his desires and dreams of a companion. Alex, a transgendered Filipina girl, had the bronze skin colo... Read full Story
Jon Paul 2022-09-21 5,613 Group Sex Cumshot Bareback Creampie Shemale Fucks Guy Blowjob Asian Ladyboy Guy Fucks Shemale cum in mouth
57%
Sucking cock, a curiosity. Part 1
I've been a straight man since forever. I've also been into sex and porn since I was young. And my fetishes always involved tits and big asses. Any kind of tit play turned me on. Still does. When I was 14, I saw a porno and watched tittyfucking for the first time. It turned me on so much, ... Read full Story
bigdickthug 2017-05-22 5,368 Fetish Big Cock Sex Toys
100%
Making my CD slut fantasies become real
Having an open mind and saying yes to a TS friends' idea has lead me to discover things I never even knew about myself. I’ve always been into kink, but my adventures as a CD have shown Me that I have filthy perverse cravings to satisfy with people I’ve yet to meet. I enjoy transsexual escorts and th... Read full Story
pinkybrown666 2021-05-20 5,617 Crossdresser Amateur Group Sex Creampie Fetish threesome gangbang Interracial cum in mouth blonde cd
100%
Chinese Apple Turnover
I crashed harder than anytime ever in my life and my dreams were fucking vivid. I dreamt of being fucked. And of sucking huge cock and getting face fucked so hard that I was cock drunk and high from holding my breath so much. But so really horny from him doing that, so into that cock. Of Jax f... Read full Story
ASSEaster5678 2019-01-09 6,869 anal sex Shemale Fucks Guy Asian Guy Fucks Shemale
100%
Cheating Sissy Wife chapter2
My sweetheart Keith is back from his road trip and we were about to make up for lost time. He didn’t even want me to fix dinner. Instead he said that we would order pizza later. Meanwhile we started making out right there on the couch. We were both horny and anxious to get next to each other. I felt... Read full Story
Regina10 2020-10-26 5,076 Crossdresser Big Tits Cumshot Bareback Creampie Blowjob Big Cock Ladyboy Lingerie Guy Fucks Shemale pov Ass to Mouth
100%
Slut /W Bad Boy
I was excited as always because I was about to go out in public and hopefully I will meet some horny man with some money and get laid. Now, to make sure that I am a picture of femininity, I double checked my makeup in several mirrors from many angles. My lips were perfect and I made sure my cheeks b... Read full Story
Regina10 2020-12-04 7,348 Stockings Crossdresser Big Tits Cumshot Bareback Fetish Blowjob Big Cock Lingerie Guy Fucks Shemale pov Ass to Mouth
100%
Lady and the Cop
A cab pulled up to the front door of the Orbit Lounge bar and three curvaceous figures, Regina, Alice and Rita stepped out, paid the cabbie, and moved gracefully towards the main entrance. They were all so jubilant and any observer would suspect correctly that they were already under the influence. ... Read full Story
Regina10 2018-03-02 3,070 Stockings Group Sex Big Tits Lingerie Guy Fucks Shemale Solo Shemale
100%
KING OF TRANNY CHASERS ENTRY 2
LAST YEAR TO CELEBRATE MY BIRTHDAY I DECIDED TO FULFILL ONE OF MY SEXUAL FANTASITES. I HAD BEEN WITH 2 CIS WOMEN SEVERAL TIMES BUT NEVER HAD I BEEN WITH 2 TRANNIES. MY BIRTHDAY WAS ON A FRIDAY SO I SPENT THAT DAY AND THE NEXT CELEBRATING WITH MY FAMILY AND GINA..THAT SUNDAY I SET UP AND PLANNE... Read full Story
Ghostface drillah 2024-07-04 3,332 anal Amateur Group Sex Big Tits Cumshot Shemale Fucks Guy Fetish Big Cock Guy Fucks Shemale big ass Homemade Ass to Mouth shemale fucks shemale
96%
Shemale fun
Recently I've been chatting with a very feminine and beautiful shemale named Lisa. We've been trading photos and dirty talk over chat lines and emails. I've always fanatsized about a cick with a dick and unexpectedly the opportunity came that we could potentially meet. Being married I had to conc... Read full Story
shemale lover 2014-11-25 10,405 tranny suck Creampie Shemale Fucks Guy ass fucking 69
80%
Shemale fun
Recently I've been chatting with a very feminine and beautiful shemale named Lisa. We've been trading photos and dirty talk over chat lines and emails. I've always fanatsized about a cick with a dick and unexpectedly the opportunity came that we could potentially meet. Being married I had to conc... Read full Story
shemale lover 2014-12-03 6,694 tranny suck Creampie Shemale Fucks Guy ass fucking 69
78%
What Lies Beneath (Part 2)
A RENDEZVOUS WITH SUZY – What Lies Beneath (Part 2) We woke in the morning, showered and dressed before going down to make breakfast. Mia must have planned this all with the girls in advance because she had packed a small suitcase with some day clothes for us both. The sun was streaming throu... Read full Story
The Adventures of Mia & Seth 2020-08-18 8,032 Group Sex Shemale Fucks Guy Shemale and Girl Interracial Latex toys
100%
Hung Shemale has Motorcycle Trouble near Vegas
I drive down a deserted two- lane highway outside of Las Vegas, Nevada. It is August and the temperature is well over 100 degrees. In the distance, I see a tall beautiful mature creature that walks alongside the road. As I pull over, I am stunned by her powerful physique. She sports an incredibly ti... Read full Story
darrell 2024-02-02 5,838 Shemale Fucks Guy Blowjob blonde Big Cock Mature deepthroat cum in mouth toe sucking Fisting Anal
84%
The Making of Erica - Sperm Loving Crossdresser
Confessions of a Crossdresser I am a crossdresser. It is an addiction. I’ve tried, but I really can’t stop myself: fantasies, endless looking at pornography, shopping, dressing, masturbation, and inevitably, seeking men to please. I have only sucked cocks, but over a hundred at my las... Read full Story
shemale lover 2015-09-03 16,863 shemales Masturbation Fetish
91%
Lake Surprise
After finals of my first year in college in a northern university, I was ready for some real relaxation back home in the warm south. During finals I had started thinking how nice it would be to borrow my brothers boat and hit the lake for a week. I talked my roommate into making the trip home ... Read full Story
shemale lover 2011-12-08 10,930 anal Group Sex Creampie
100%
Working for a Living Chapter 6
I slid out of the old Ford truck driver's side door. Surprisingly, my legs felt a bit shaky as my feet hit the concrete driveway of the Malibu mansion. I nervously straightened my cut-off shorts as I walked around the truck. She was waiting by the tailgate with a big smile on her face. "Wow Jai... Read full Story
shemale lover 2012-10-05 3,806 Group Sex Creampie threesome
97%
Shemale fucks guy - My gf fucks my slutty ass.
I have a shemale girlfriend & we both are in a relationship. One day, I decide to give her a visit. I'm 5'7 guy & she's 6 feet. That makes her tall & intimidating & whenever we meet, it's me who become her gf. I visit her, she takes me in. SHe pulls me towards her while giving me a deep kiss. I ... Read full Story
glodobox 2020-12-04 23,062 Amateur Creampie Shemale Fucks Guy Fetish Blowjob Big Cock Ladyboy Homemade cum in mouth
100%
Sissy Slut and Stepdads part 2
My mother kicked Frankie out and swore that he was the last loser she would ever date. She believed that we were still having sex, and she was right. Pure raw animal lust drove us, and It was even better when we sneaked and got. That nervous adrenaline mixed with my passion and made me super horny a... Read full Story
Regina10 2021-02-15 4,396 Teen (18+) Crossdresser Big Tits Cumshot Masturbation Fetish Blowjob Big Cock Lingerie Guy Fucks Shemale Homemade Ass to Mouth
100%
Horny Writing A Strange Habit
I enjoy watching videos which I can Vicariously live. This is nothing more than my horny hobby, an amalgamation of various thoughts. My form of hands free edging. Spell checked only, "No I haven't proof read a first draft, not trying to publish masterful works here." Hope to hear from those w... Read full Story
Araina 2021-03-08 2,963 Crossdresser Amateur Big Tits Cumshot Bareback Fetish Blowjob Big Cock Guy Fucks Shemale Frottage Homemade Ass to Mouth cum in mouth
80%
Group Sex
Jan and I have been together now about 4 years but known each other since High School. We are both in our early fifties. We had met a transgendered girl (Gabby) about a year ago and we get together about once a month and enjoy each other’s company, going out playing and having intimacy together. Gab... Read full Story
Jon Paul 2021-04-19 3,502 Group Sex Cumshot Bareback Creampie Shemale and Girl Guy Fucks Shemale cum in mouth
100%
Regina" s Love session
As Tommy entered the apartment, I couldn’t help but notice that his cock was suddenly excited and outstanding tonight and I knew the reason. I smiled to myself with confidence because my l attire was getting the job done. I was wearing my shocking pink sheer lingerie with the frilly top that accen... Read full Story
Regina10 2022-04-01 2,655 Stockings Big Tits Cumshot Bareback Creampie Blowjob Big Cock Lingerie Guy Fucks Shemale pov Ass to Mouth cum in mouth
100%
From a 50's virgin to a Mature good for all
***Prologue - Confessions: Every day since I offered my virginity, I put myself in the shoes of a woman. The little town where I live forbids me to show myself socially. However I made myself an accomplice, my epilator who receives me after closing. Since my new beginning, male masturbations are not... Read full Story
hippocampus_171 2023-01-11 4,639 Stockings Crossdresser Amateur Group Sex threesome Big Cock domination Mature foursome Homemade cum in mouth shemale + shemale milfs
100%
Philippines Vacation with a Dominant Big Cock Ladyboy
I am still in a state of unbelievable joy that I was lucky enough to experience this but I 100% did and I can’t stop thinking about it as I thought things like this only happen in porn or fantasies. Buckle up because this is a wild one and happened in Manila May 2024. I had the opportunity to vi... Read full Story
AllenB 2024-07-14 6,746 Bareback Creampie Shemale Fucks Guy Big Cock Ladyboy Guy Fucks Shemale cum in mouth domination act filipina ts filipina ladyboy
100%
First Time Sex With Tranny
Wow - if you have ever wondered what it would be like to be with a TS girl, this would be a great place to start. Just got this from a “friend” of mine who wanted to write about his first TSgirl experience. Can’t say for sure if it’s 100% true, but who cares? I do know that they were together so ... Read full Story
sach 2015-11-16 8,162 first time tranny suck stroking mutual sex
68%
My first shemale attraction
My first shemale attraction In high school a group of friends and I obtain a copy of Hustler magazine. Each week one of us will take the magazine home for the weekends, then give it to the next following classmate. It was the weekend of my turn. I rushed home to get started on my masturbation. I ... Read full Story
My Shemale Attraction 2017-07-05 10,791 tranny Masturbation Fetish shemale jerking
92%
My Dream pt 3
Our first invitation arrived at the end of September. Sydney spotted it first and tossed it into the trash with out looking at it. She didn't tell me what it was and I didn't bother asking. The next invitation arrived two weeks later. This one Sydney opened and after reading it she passed ... Read full Story
Sydney Sun Min 2018-01-04 16,781 Group Sex Shemale Fucks Guy Shemale and Girl Sex Toys
69%
From Mob to Shemale
Two years ago, I was a member of the Ciccio family in Chicago. I wasn't very high up in the organization, because I wasn't Italian. I had made my way up through the ranks, however, and was making a pretty good living. I had everything I wanted, got all the girls I wanted, and did just about ... Read full Story
shemale lover 2011-10-29 10,748 orgasm facial oral sex
100%
The Triple X cocktail - Wife Shares Shemale With H
"Where are you?" Tara asked in a high pitched voice as if she was either excited or freaked out. "I'm at the boutique" I replied. "Ok I am coming by, something very important. I am so freaked out now and I will tell you all about it when I meet you. Will be there in half an ... Read full Story
shemale lover 2012-02-21 3,966 Group Sex Creampie face fucking tit licking
100%
Male or Shemale, Still a Slut
Part 1 My name is Brandon. I'm 18 (still in high school), 5'5", white with black hair, and rather feminine. I'm really slim with barely any body hair. All this has combined so that I'm not so popular with the ladies, which sucks cause I am one horny son of a bitch. Luckily, I'm rather fond ... Read full Story
shemale lover 2012-12-20 9,631 Cumshot sucking blonde ass fucking Guy Fucks Shemale
88%
Very Impatient on a sex fanstay
Are you ready for this Mish?" "Not really but it's too late to back out now." I stood in a dark alley before a metal door shaking with both anxiety and the cold, waiting for the door slot to open and for the night to begin. I wouldn't admit it to my friend Simone but secretly I hoped we would ... Read full Story
ASSEaster5678 2018-07-10 11,043 Shemale Fucks Guy Big Cock Ladyboy Guy Fucks Shemale Mature
100%
Big Dick Alessia Visits Dallas
Alessia Hung Mature MILF travels to visit a Big Dicked Man and his Sexy Household If you like Transexuals, big cocks, bondage, BBWs, big clits, deep throat, fisting, 69, ass fucking, sounding, piercing, cum swallowing and big loads this story is for you. If not don't bother reading. If you fav... Read full Story
darrell 2022-04-20 4,709 Group Sex Cumshot Shemale Fucks Guy Blowjob blonde Big Cock Asian Shemale and Girl Sex Toys Mature Ass to Mouth shemale + shemale
100%
TG Neighbor
With Christmas and New Year’s over, the weather here in Florida has become cooler, 45 degrees last night and it will be in the mid-sixties for the rest of the week. We live in a sub-division right off the waterway, very private. My neighbor usually comes down around Christmas and stays until tax ti... Read full Story
Jon Paul 2022-04-22 6,944 Big Tits Cumshot Latina Bareback Creampie Shemale Fucks Guy Blowjob Asian Ladyboy Guy Fucks Shemale
100%
The Big Mature Shemale Next Door
The Big Mature Shemale Next Door SugarandSalt "Please can I just wear my old swimming trunks?" Warren begged. "No!" his mom yelled back from the other room. "Barbara purchased that for you. It was expensive so you better remember to thank her." Warren looked at himself in the full length mir... Read full Story
Gwapo67 2022-05-03 8,454 Bareback Creampie Shemale Fucks Guy Blowjob Big Cock Mature cum in mouth
100%
Crossdresser gets dick for first time
I was so tired of just watching porn. So tired of the sissy hypno threads that made me crave men, crave cock, crave being weak, crave being the bitch...only to cum and do nothing about it. But the desire to transition from fantasy to reality was growing stronger and stronger. I decided it was ti... Read full Story
Sissy Ava 2022-10-11 8,237 Stockings Crossdresser Amateur Bareback Big Cock Guy Fucks Shemale Ass to Mouth cum in mouth
75%
A Big thank you to everyone and what's to come next year!
Hi everyone! This is something of a yearly wrap up that I wanted to write up. First I wanted to thank you all for following me this year ❤️ This was the first year that I decided to start taking this seriously and create content full time. I think I still have a ways to go to improve my content, but... Read full Story
Kate Quinn 2022-12-31 3,520 Amateur Big Tits Big Cock Shemale and Girl Guy Fucks Shemale
100%
Shemale fantasy with female squirting
I just finished my mornig coffee at the breakfast bar in the kitchen when the door beel rung. My wife opened the doo and it was one of her hot friends. She invited her to sit at the bar beside me and serve her a coffee. Right before she gives her the coffe she slips something into the brew. Her ... Read full Story
TRTRAIN 2023-05-21 3,838 anal Stockings Amateur Big Tits Big Cock Lingerie Shemale and Girl pantyhose Mature Homemade Ass to Mouth cum in mouth shemale fucks female
100%
Erotic Dreams come true.
You start having intense erotic dreams — and the faces you see is one you don’t recognize but that feels familiar. Mandy was that girl that Chad had been dreaming of, the kind where to see her made a rush go through you like a hot flash. Chad had just broken off a relationship, and his sister war... Read full Story
Jon Paul 2023-05-26 5,135 anal Stockings Big Tits Cumshot Bareback Fetish Blowjob Guy Fucks Shemale small cock
100%
Big cock heaven.
I live in Vancouver and saw a beautiful trans escort online and couldn’t resist setting up a meeting. I met her at a hotel and she was just as beautiful in person as online. She was Asian and had the most wonderful big tits and ass. Her cock was a solid 8 inches, uncut with a big mushroom head, whic... Read full Story
Eyecandy64 2024-02-06 6,753 anal Bareback Creampie Shemale Fucks Guy Blowjob Big Cock Asian
100%
Club sex the 25yo
There’s a very special private club around, it’d meetings take place in a very secret place. It takes a lot to gain membership. You have to either have a lot of money AND a friend in the club OR you have to take part in the ceremonies for at least a year. Also you have to be willing to b... Read full Story
shemale lover 2011-12-10 5,242 anal Group Sex lesbian
88%
Female For A Day?
I have always been obsessed with boobs. I like them all but especially big ones. I stare at them in the grocery store and of course have an extensive collection of pics from the internet. Lately, I have even been thinking about what it would be like to have a big set myself. I'm a guy don't get me w... Read full Story
shemale lover 2012-07-04 4,846 Fetish oral orgasm crossdressing
72%
The Weekend
The weekend A story inspired by the very sweet and sexy samantha satine and my beautiful wife Part 1 - The preparation samantha packed her suitcase with her usual attention to detail, makeup, lingerie, wigs, but no dresses. Her head was confused by this, Master D had given her instructions... Read full Story
MasterofSissies1 2018-12-04 9,080 anal tranny Stockings Crossdresser Group Sex gangbang oral domination Guy Fucks Shemale transvestite schoolgirl School uniform maid uniform
80%
How it started
What got me started off watching shemale porn was actually meeting a very beautiful shemale at a beach party. I already knew she was a guy but she was so beautiful. So at one point I asked her if she wanted to go for a walk and after a few minutes and let her know that I was down. Her response was ... Read full Story
PNPFUCKBOY 2019-02-12 12,254 Teen (18+) Small Tits Crossdresser Amateur Big Tits Outdoor Latina Bareback blonde Big Cock Ladyboy domination Guy Fucks Shemale Interracial Sex Toys Mature Homemade Ass to Mouth
100%
First time with big surprise
My first story translated into English, I hope you like it. It was late at night, I had been drinking with friends and was on my way home. I am a man in his early 30s, smartly dressed and looking quite attractive. The night was beautiful, clear sky, warm and in the city were some people on the ... Read full Story
Marten1201 2023-01-06 7,096 Big Tits Bareback Creampie Shemale Fucks Guy blonde Big Cock
50%
KING OF TRANNY CHASERS ENTRY 1
IT WAS AROUND 1AM AND MY GIRL FRIEND GINA AND I ARE GOING AT IT.HER NAKED BODY WAS HANGING OFF THE BED IN DOGGY.HER BIG CARAMEL ASS CHEEKS JIGGLED AS A POUNDED FROM BEHIND. SHE WAS SCREAMING "YES BABY" AND MOANING NON STOP..AS BEAUTIFUL AS SHE LOOKED AND HOW AMAZING HER BACK SHOTS WERE LOOKING..W... Read full Story
Ghostface drillah 2024-07-02 2,893 Amateur Big Tits Masturbation Big Cock Ebony Guy Fucks Shemale big ass Homemade Ass to Mouth cum in mouth
100%
Fetish party with a twist
The smell of rubber and latex and the combination of the strobe lighting was overpowering, the techno sound of the club just added to the already intoxicated atmosphere of the place. The club was a frenzy of half naked, latexed, rubberised bodies covered in sweat dancing to the frenzied sound of tec... Read full Story
shemale lover 2011-09-22 4,550 anal sex Group Sex cum Latex
100%
Woman Cross Dresses for Power & Sex
Tucked in the far corner of a dark, dancehall parking lot, Sarah, also known as Robert, was having sex in a car with Joseph, also known as Josephine. Having sex in a car was no big deal. A lot of couples have sex in cars. Yet, if a passerby could see through the steamy windows, a sight to behold, ev... Read full Story
shemale lover 2012-10-09 4,216 sucking Fetish fingering crossdressing
100%
Threesome goes clubbing
Ft. Lauderdale is probably the most LGBT friendly city on the east coast. So many nice restaurants and clubs that welcome all and have many LGBT employees as well. Lydia and I have been married several months, we had met Joanne an absolute amazing transgender girl during a weekend trip to the Baha... Read full Story
Jon Paul 2021-07-08 5,493 Big Tits Cumshot Bareback Creampie threesome Guy Fucks Shemale cum in mouth
88%
Surprise Ending (Part Two)
My curiosity, unconscious urges, and my horniness pushed me into action. I gently cradled Karla's balls in my left hand while my right hand settled on her taut ass. I caressed both and then let my left hand move on to her now blood engorged shecock. I am a pretty big dude, but I could hardly get ... Read full Story
Chantel13 2022-08-23 4,663 Crossdresser Amateur Group Sex Outdoor Big Cock Shemale and Girl redhead cum in mouth
50%
One Torrid Night
I had no idea how a sexual impulse one night while we were fooling around would excite us so much later. We have been married for nearly 27 years and we have just found our love life again after some barren years. A year previous to this story I had come out of the closet and told my wife about my c... Read full Story
shemale lover 2011-12-28 4,374 shemales Group Sex sucking Big Cock
0%
Just a Sex Story
I just love to write stories about various types of sex. I love to write and masturbate as I write! The fact is, in fiction I have fucked everybody around and many who are not around. In truth I have even fucked you! And I am going to do it again. First unbutton my shirt and jeans then slip them off... Read full Story
shemale lover 2012-01-15 2,973 anal Big Tits shemale
100%
Birthday Surprise
It has taken me months to plan everything. It hasn't been easy to make the arrangements without him finding out but I think I have managed to pull it off. I have planned what I think will be the perfect birthday surprise for him. Today, when he gets home he will find a note with instructions. Happy ... Read full Story
shemale lover 2012-06-20 4,751 anal sex Creampie Big Cock oral sex
100%
Threesome fun
We had invited friend over who has big cock --he arrived and we sat around for awhile talking about sexual encounters of the past --I'm a bi part time shemale cross dresser who is very kinky --anyway it got around to looking around the house and as it happened we stopped in the bedroom , and all o... Read full Story
goodgurl34 2019-01-08 4,698 Stockings Crossdresser Amateur Big Tits threesome Blowjob Big Cock Lingerie domination Guy Fucks Shemale Mature Homemade threesome sex
77%
A TRANNY FOURSOME & FIVESOME AT A GURLS PARTY DAY
At a recent TV gurls party, I was involved with a 4 and 5 way sex orgy held in a big private house near Brisbane AUSTRALIA. I arrived all dressed & fixed my make-up & hair as we chatted & gossiped over glasses of wine & some lunch. The other gurls arrived as we got re... Read full Story
MISSJENNIFER 2019-04-26 4,427 Stockings Crossdresser Group Sex Blowjob Big Cock
85%
Tits and Cock
I had always wanted to fuck a shemale. The idea of a hot chick with a huge thick cock really turned me on. I called an escort service and asked for a lady with something extra. About and hour and a half later my doorbell rang. I open the door and there stood a tall curvy beauty, must have been six f... Read full Story
shemale lover 2012-03-25 4,327 anal sex Big Tits Creampie orgasm jerking off huge cock
100%
Shemale snapped
Camilla took a few steps out the door of her balcony to get a feel for the temperature. Thankfully it was cool out. It had been a hot day, which meant a cool night was welcomed. She closed the door and pulled out a pair of gold hoop earrings. She was suffering from a mild case of the jitters. The... Read full Story
shemale lover 2012-06-21 6,507 anal sex Creampie shemale Big Cock